Yeah, my problem is just that Ragna's mixup seems a bit bad, at least compared to the rest of the cast. 2B -> 6B only works so many times, and 6C seems to only come out on certain setups during blockstrings. 2D is extremely punishable, IB'd or no and everyone always seems to see GH coming. Not to mention that as soon as Ragna gets pushed away you pretty much can safely block high and not worry about getting hit.
What i've been trying lately is 2Bxn -> 6B once they finally decide to block low, but it's extremely interruptable. Maybe if I can ever perfect doing TK GH on whim I know 3C -> TK GH is a decent mixup and leads to awe inspiring damage if you can do it properly.